My husband pointed out that my 3/4-1" c.moorii (at least that's what they were sold to me as from a breeder) look just like my 3" deep water hap. Is that right? Or did I get tricked and bought 4 deep water haps?
Dolphins can get that line as well, however when you go to turn on the lights or feed them if you see a couple blotches once in a while on the side they're likely dolphins. Mine used to show them however now they usually look just like yours. Depends on their mood. I would assume they're c moori until proven otherwise.
I noticed when I went down to take the pictures and just had the ceiling light on they were much darker, and blotchy, but after the lights came on they lightened up, and then that line threw their eyes appeared. :-?